On my 98.5 24 valve I have to refill my power steering reservoir at least once a month. A friend who is a Cummins technician for the local dealership told me that my hydroboost is bad & causing the reservoir to puke fluid from under the cap. Can someone advise if this sounds correct? When I do see fluid on the ground it's only a few drops & where you'd expect it to be if the pump / reservoir is leaking but it's all over the underside of the engine compartment. If the hydroboost is bad & needs to be replaced how difficult / expensive of a job is it?